I don't think Embraer is trying to market the E190/195 as an "RJ", but as a replacement for the aging 100 seat mainline aircraft such as the DC-9, or as a way to capture new or bigger markets that wouldn't support a 737 or A320 with 30%-50% more seating capacity. One shouldn't compare it to a 737NG or A320 because it's not even in the same league as them. They are for different markets.